Cover Page September-2011-Advanced Materials Letters

Advanced Materials Letters

Volume 2, Issue 3, Pages 233-238, September 2011
About Cover


Strength and microstructure of semi-solid stirring brazing of SiCp/A356 composites and aluminum alloy in air

Huibin Xu*, Hui Yang, Quanxiang Luo, Youliang Zeng, Bofang Zhou, Changhua Du

Chongqing University of Technology, No. 69, Hongguang Road, Chongqing 400054, P.R. China

Adv. Mater. Lett., 2011, 2 (3), pp 233-238

DOI: 10.5185/amlett.2011.1216

Publication Date (Web): Apr 08, 2012

E-mail: hbxu@cqut.edu.cn, luoquanxiang@cqut.edu.cn  

Abstract

The semi-solid stirring brazing process of SiCp/A356 composites and 2024 aluminum alloy was investigated. The two substrates were heated up to the semisolid temperature range of Zn27Al filler metal in the joint region by a resistance heating plate in air. At this point a stirrer was penetrated into the semi-solid weld seam in order to mix filler metal and the two sides of substrates into a single uniform joint. After stirring, specimens were sectioned for analysis of macro- and micro-structures along the weld region. The research shows that SiCp/A356 composites and aluminum alloy can be successfully joined with semi-solid filler metal by optimizing stirring temperature. It can be found that most of the oxide film on the surface of the base metal was disrupted and removed through the observation by SEM. The metallurgical bonds formed between the filler metal and the base materials. Since the semisolid temperature range of filler metal is narrow, the accurate controlling of weld pool temperature must be considered.

Keywords

Aluminum metal-matrix composites, 2024 aluminum alloy, brazing, stirring, semi-solid

Current Issue

Smart Healthcare pulls up Clouds for Virtual Medicine


Selecting the correct electromagnetic inspection technology 


Influence of railway-track grinding on the track material condition and tribological behaviour


Micromechanical Fatigue Modelling of the Size Effect in Micro-Scale 316L Stainless Steel Specimens


Functionalization of Graphene and Reduced Graphene Oxide in Different Matrices


Effect of parasitic polytypes on ballistic electron transport in chemical vapor deposition grown 6H-SiC epitaxial layers


Photomemristive heterostructures based on two-dimensional crystals


Architecture - behaviour - properties relationship in Star-shaped MPA-PMMA and MPA-PS hyper-branched copolymers


Graphene and doped graphene: A comparative DFT study


Ag2CO3 / Magnetic reduced graphene oxide nanocomposite as advanced visible light photocatalytic hybrid materials for efficient degradation of azo dye


Optimization of acid hydrolysis process for the preparation cellulose nanofibrils


Alginate/k-carrageenan and alginate/gelatin composite hydrogel beads for controlled drug release of curcumin


Study of microstructure and mechanical properties of friction stir welded ferrite-martensite DP700 steel


Previous issues

9th Anniversary of Advanced Materials Letters: Progress and Opportunities

Coating - A potent method to enhance electrochemical performance of Li(NixMnyCoz)O2 cathodes for Li-ion batteries

Analysis of machined electron beam treated Ti6Al4V-ELI implant surfaces

Bottom-up design of hydrogels through click-chemistry modification of magnetic nanoparticles

Visualization of mechanical loads with semiconductor nanocrystals 

Room temperature growth of ultra porous hot-wire deposited tantalum pentoxide

Substrate integrated circular cavity resonator filled with nano-fibrillated cellulose for humidity detection

Oxygen vacancy filament-based resistive switching in Hf0.5Zr0.5O2 thin films for non-volatile memory

Innovative silicon compatible materials for light emitting devices  

Graphene micromesh for transparent conductive films application 

Applications of nano-scale Cirrus DopantTM to improve existing coatings

Chitin nanofibrils in renewable materials for packaging and personal care applications

Synthesis of AgNPs embedded double network nanocomposite hydrogels having high swelling and anti-bacterial characteristics

Upcoming Congress

Knowledge Experience at Sea TM